Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-5.slh.1-sidux-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

What I was doing when the application crashed:
A person send me a message via Kopete and tzhat crashed the workspace 
I was working as normal no fancy stuff nothing

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fa34b89b750 (LWP 3716))]

Thread 2 (Thread 0x7fa321678950 (LWP 3722)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fa34b3e3469 in QWaitConditionPrivate::wait (this=0x2a9d9b0, mutex=0x2a9d9a8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=0x2a9d9b0, mutex=0x2a9d9a8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007fa3477e4024 in QHostInfoAgent::run (this=0x2a9d990) at kernel/qhostinfo.cpp:260
#4  0x00007fa34b3e2475 in QThreadPrivate::start (arg=0x2a9d990) at thread/qthread_unix.cpp:188
#5  0x00007fa348125f9a in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007fa348cec56d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa34b89b750 (LWP 3716)):
[KCrash Handler]
#5  QList (this=0x0) at /usr/include/qt4/QtCore/qlist.h:111
#6  List (this=0x0) at ../../kdecore/io/kurl.h:126
#7  KDirLister::directories (this=0x0) at ../../kio/kio/kdirlister.cpp:1969
#8  0x00007fa33f2e3d27 in KFilePreviewGenerator::Private::updateCutItems (this=0x29cdd50) at ../../kfile/kfilepreviewgenerator.cpp:641
#9  0x00007fa33f2e49ea in KFilePreviewGenerator::qt_metacall (this=0x29cdc00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff53ce4db0) at ./kfilepreviewgenerator.moc:89
#10 0x00007fa34b4dd682 in QMetaObject::activate (sender=0x1c7b3b0, from_signal_index=<value optimized out>, to_signal_index=7, argv=0x7fff53ce4db0) at kernel/qobject.cpp:3112
#11 0x00007fa3494c639d in QApplication::x11ProcessEvent (this=0x1c29a80, event=0x7fff53ce6650) at kernel/qapplication_x11.cpp:3384
#12 0x00007fa3494ede9c in x11EventSourceDispatch (s=0x1c36200, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#13 0x00007fa3483737aa in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#14 0x00007fa348376df8 in ?? () from /usr/lib/libglib-2.0.so.0
#15 0x00007fa348376fac in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#16 0x00007fa34b4f0bff in QEventDispatcherGlib::processEvents (this=0x1c32710, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#17 0x00007fa3494ed64f in QGuiEventDispatcherGlib::processEvents (this=0x7fff53ce4ca0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#18 0x00007fa34b4c6de2 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#19 0x00007fa34b4c71b4 in QEventLoop::exec (this=0x7fff53ce6980, flags=...) at kernel/qeventloop.cpp:201
#20 0x00007fa34b4c9424 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#21 0x00007fa33f5481bb in kdemain (argc=1, argv=0x1bc0740) at ../../../../plasma/shells/desktop/main.cpp:50
#22 0x0000000000407264 in launch (argc=1, _name=0x1bdfe08 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x1bdfe28 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a0ff "0") at ../../kinit/kinit.cpp:676
#23 0x0000000000407a28 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1168
#24 0x0000000000407fae in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1361
#25 0x000000000040863b in main (argc=2, argv=0x7fff53ce77f8, envp=0x7fff53ce7810) at ../../kinit/kinit.cpp:1788

This bug may be a duplicate of or related to bug 204032

Reported using DrKonqi